1# Copyright (C) 2012 The Libphonenumber Authors 2# 3# Licensed under the Apache License, Version 2.0 (the "License"); 4# you may not use this file except in compliance with the License. 5# You may obtain a copy of the License at 6# 7# http://www.apache.org/licenses/LICENSE-2.0 8# 9# Unless required by applicable law or agreed to in writing, software 10# distributed under the License is distributed on an "AS IS" BASIS, 11# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12# See the License for the specific language governing permissions and 13# limitations under the License. 14 15# Author: Fredrik Roubert 16 17# It used to be common to provide pre-compiled Google Test libraries, but this 18# practice is not recommended and is increasingly rare today: 19# 20# http://code.google.com/p/googletest/wiki/FAQ#Why_is_it_not_recommended_to_install_a_pre-compiled_copy_of_Goog 21# 22# This helper function will either find a pre-compiled library or else find the 23# source code and add a library target to build the library from source. 24 25function (find_or_build_gtest) 26 # Find header files. 27 find_path (GTEST_INCLUDE_DIR gtest/gtest.h) 28 if (${GTEST_INCLUDE_DIR} STREQUAL "GTEST_INCLUDE_DIR-NOTFOUND") 29 message (FATAL_ERROR 30 "Can't find Google C++ Testing Framework: can't locate gtest/gtest.h. " 31 "Please read the README and also take a look at tools/cpp/gtest.cmake.") 32 endif () 33 include_directories (${GTEST_INCLUDE_DIR}) 34 35 # Check for a pre-compiled library. 36 find_library (GTEST_LIB gtest) 37 if (${GTEST_LIB} STREQUAL "GTEST_LIB-NOTFOUND") 38 # No pre-compiled library found, attempt building it from source. 39 find_path (GTEST_SOURCE_DIR src/gtest-all.cc 40 HINTS /usr/src/gtest /usr/local/src/gtest) 41 add_library (gtest STATIC ${GTEST_SOURCE_DIR}/src/gtest-all.cc) 42 include_directories (${GTEST_SOURCE_DIR}) 43 44 set (GTEST_LIB gtest PARENT_SCOPE) 45 endif () 46 47endfunction () 48